Why do my functional prototypes keep cracking under load?

Most standard resins look strong but crack when actually tested. XVN-50 has higher strain at break (51.2%, ISO 527-5A) and 5.9 kJ/m² notched impact resistance, so parts survive real mechanical stress. This reduces reprint cycles and makes your test data more reliable when moving toward production. Engineers running early field trials use it to avoid unexpected failures in the test rig.

What resin should I choose for flexible gaskets or dampers?

FLX-300 is the right choice for gaskets, seals, vibration dampers, and soft grips that need to compress and return to shape repeatedly. It is 44 Shore A with 1.7% compression set at 25 °C after 72 hours. It holds softness over time, while a lot of generic flexible resins keep curing in storage and harden within weeks. That makes FLX-300 reliable for parts that need consistent performance after many cycles.

Can these resins be used for outdoor parts?

XVN-50 and FLX-300 work for sheltered outdoor use. For direct sunlight or constant weather exposure, apply a UV-protective coating or pick AMD-3 instead. Always test in your actual conditions. Photopolymer resins generally have limits with prolonged UV and moisture, so a coating or different material can extend service life significantly.

How do I create reliable screw threads in XVN-50?

XVN-50 holds tapped threads for normal use. For parts that will be disassembled often, brass heat-set inserts last longer. The material is tough enough for normal workshop handling without cracking around the thread. Heat-set inserts remain the right choice for high-cycle applications where thread wear becomes an issue.

Is ESD-R-100 suitable for machining?

Yes. The static-dissipative property is throughout the material, so drilled, sanded, or machined surfaces stay effective. This is the main advantage over surface-coated ESD plastics, where machining removes the conductive layer. ESD-R-100 jigs and fixtures can be modified after printing without losing protection.

Why does my flexible part harden over time?

Generic flexible resins keep curing slowly after post-cure, which is why they stiffen over weeks or months. FLX-300 was reformulated specifically to avoid that problem and holds its softness under normal conditions. Engineers tend to choose it after getting tired of replacing parts that stiffened on the shelf or in service.

What is the best resin for high-detail mold masters?

AMD-3 is our recommendation for mold masters. It is sulfur-free, so RTV platinum-cure silicone sets without inhibition. It also holds fine detail with good dimensional stability. Standard photopolymers often contain sulfur compounds that inhibit platinum-cure silicone, leaving the silicone tacky against the master. AMD-3 contains none, so the silicone cures fully on the first pour.

How should I clean ESD-R-100 jigs?

Use IPA and wash thoroughly. ESD-R-100 has higher viscosity than clear resins, and the carbon pigmentation can leave residue, so change the wash IPA more frequently. Dry parts completely with compressed air before post-curing. Trapped solvent can affect surface resistivity and mechanical properties over time.

Prototypes you can test against spec.

XVN-50 for tough functional parts. FLX-300 for flexible components that stay flexible over time. ESD-R-100 for static-dissipative jigs and fixtures. AMD-3 for sulfur-free mold masters. Every batch is tested, so the mechanical numbers you design with stay consistent from one order to the next.

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Prototypes failing under stress?

A lot of resins look strong until you actually test them. XVN-50 measures 51.2% strain at break and 5.9 kJ/m² notched impact resistance, so snap-fits, living hinges, and functional parts survive cycling instead of cracking on the first run. Engineers tell us prototypes now make it through bench testing.

View XVN-50 Resin

Static risks in sensitive components?

ESD-R-100 dissipates static through the entire material, not just the surface. That is what makes it the practical choice for PCB jigs, soldering fixtures, and component trays. The carbon dispersion still works after you drill, sand, or machine the part, so your tools stay ESD-safe through normal shop use.

View ESD-R-100 Resin

Flexible parts that harden over time?

FLX-300 holds its softness and elasticity far longer than generic flexible resins, which tend to keep curing on the shelf and stiffen within weeks. Suited to gaskets, seals, vibration dampers, and soft grips that need to compress and return to shape repeatedly.

View FLX-300 Resin

Why engineers choose AmeraLabs

EU-Made
Developed and manufactured at our ISO 13485 certified facility in Kaunas, Lithuania. Same-day shipping on standard orders, no minimum quantity.
Consistent
Every batch is tested before it ships. Mechanical properties stay within tolerance, so test data from one print run still applies to the next. Certificates of analysis available on request.
Professional Support
English-speaking support from people who print with these resins every day. One business day for replies. No ticket queues, no scripts.

From Prototype to Production: Skip the Mold

	Injection Molding	SLA Production (e.g., with AmeraLabs resins)	CNC Production
Upfront Tooling Cost	€5,000-80,000 per mold	None	None
Prototype to First Production Unit	12-24+ weeks (tooling + setup)	Hours to days (print directly)	Same day to 3 days
Material Validation Required	Full re-testing (new material/process)	None (validated resin for both proto & production)	Verify stock matches
Design Change Cost	€2,000-15,000 (mold rework)	€0 (update file, reprint)	€0 (update CAD)
Cost per Unit (100 units)	€150+ (high tooling amortization)	€5-15	€25-100
Cost per Unit (1,000 units)	€15-35	€5-15	€25-100
Lead Time for Revisions	4-12+ weeks	Hours to 1 day	1-3 days

Engineering resins, picked by job.

Choose the material that solves your actual problem.

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Need Assistance With a Project?

Feel free to reach out to us! Our team is ready to assist you and provide answers to any questions you may have.
  
Whether you need more details, guidance, or clarification, we’re here to help.

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XVN-50: Engineering Resin for Movie Props and Cosplay
XVN-50 isn’t just for prototypes - its tough, impact-resistant build makes it a top engineering resin for movie props and cosplay 3D printing.

Perfect for crafting durable, detailed pieces that withstand wear on set or at conventions.
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Resin Specs That Speak Volumes
Get the hard numbers - our technical data sheets for XVN-50, ESD-R-100, AMD-3, and RBR-65 cover strength, resistivity, and more. Tested for engineering precision.
Grab Resin Data Sheets

Our Bestseller XVN-50 in Action!

Frequently asked questions

Why do my functional prototypes keep cracking under load?
Most standard resins look strong but crack when actually tested. XVN-50 has higher strain at break (51.2%, ISO 527-5A) and 5.9 kJ/m² notched impact resistance, so parts survive real mechanical stress.

This reduces reprint cycles and makes your test data more reliable when moving toward production. Engineers running early field trials use it to avoid unexpected failures in the test rig.
What resin should I choose for flexible gaskets or dampers?
FLX-300 is the right choice for gaskets, seals, vibration dampers, and soft grips that need to compress and return to shape repeatedly. It is 44 Shore A with 1.7% compression set at 25 °C after 72 hours.

It holds softness over time, while a lot of generic flexible resins keep curing in storage and harden within weeks. That makes FLX-300 reliable for parts that need consistent performance after many cycles.
Can these resins be used for outdoor parts?
XVN-50 and FLX-300 work for sheltered outdoor use. For direct sunlight or constant weather exposure, apply a UV-protective coating or pick AMD-3 instead.

Always test in your actual conditions. Photopolymer resins generally have limits with prolonged UV and moisture, so a coating or different material can extend service life significantly.
How do I create reliable screw threads in XVN-50?
XVN-50 holds tapped threads for normal use. For parts that will be disassembled often, brass heat-set inserts last longer.

The material is tough enough for normal workshop handling without cracking around the thread. Heat-set inserts remain the right choice for high-cycle applications where thread wear becomes an issue.
Is ESD-R-100 suitable for machining?
Yes. The static-dissipative property is throughout the material, so drilled, sanded, or machined surfaces stay effective.

This is the main advantage over surface-coated ESD plastics, where machining removes the conductive layer. ESD-R-100 jigs and fixtures can be modified after printing without losing protection.
Why does my flexible part harden over time?
Generic flexible resins keep curing slowly after post-cure, which is why they stiffen over weeks or months. FLX-300 was reformulated specifically to avoid that problem and holds its softness under normal conditions.

Engineers tend to choose it after getting tired of replacing parts that stiffened on the shelf or in service.
What is the best resin for high-detail mold masters?
AMD-3 is our recommendation for mold masters. It is sulfur-free, so RTV platinum-cure silicone sets without inhibition. It also holds fine detail with good dimensional stability.

Standard photopolymers often contain sulfur compounds that inhibit platinum-cure silicone, leaving the silicone tacky against the master. AMD-3 contains none, so the silicone cures fully on the first pour.
How should I clean ESD-R-100 jigs?
Use IPA and wash thoroughly. ESD-R-100 has higher viscosity than clear resins, and the carbon pigmentation can leave residue, so change the wash IPA more frequently.

Dry parts completely with compressed air before post-curing. Trapped solvent can affect surface resistivity and mechanical properties over time.

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Prototypes you can test against spec.